To provide a hydraulic circuit for travelling of a construction machine capable of suitably performing speed control of a hydraulic motor without using a counterbalance valve and preventing inertia rotation without producing cavitation when the hydraulic motor stops.
A selector valve 28 being switchable to a normal position N and an offset position O in combination with an operation of an operation lever 24 is arranged on main passages 22a and 22b. The main passages 22a and 22b are blocked on the normal position N of the selector valve 28, and both side ports 20a and 20b of an accumulator 29 and a motor 20 for travelling are connected on the normal position N of the selector valve 28. The main passages 22a and 22b are connected together on the offset position O of the selector valve 28, and pressurized oil in a pilot oil passage 32 is supplied to the accumulator 29 via a check valve 33.
ISHIYAMA HIROSHI
SANO KIMINORI
